Difference between emf and potential difference???

Kyu abhi ji aapne manas ji ko kbhe dekha nhe hai kya ???

Answer~~ Electromotive force (emf). & Potential Difference (Pd)?E.m.f is the energy supplied to the unit charge by the cell. & ?Potential difference is the energy dissipated as the unit charge passes through the components.? E.m.f is the cause.& ?Potential difference is the effect. ?The emf is also present even when no current is drawn through the battery.&? Pd.across the conductor is zero in the absence of current.? emf. unit is volt.&? Pd unit is volt. ?emf remains constant. ?Pd does not remain constant. ?emf is always greater than potential difference.? Pd is always less than emf.? emf transmits current both inside and outside of the cell. ?Potential difference transfer current between two points in the cell .?emf. symbol is E.? Pd symbol is V .? Emf.formula is E = I (Rtr) where--: (Rtr = total external and internal resistance .)?Pd. formula is V = E – Ir. ?Emf.does not depend on circuit resistance.? Pd. directly depends on the resistance between two points of measurement .?Emf.causes in  electric, magnetic and gravitational field.? Pd. induces only in electric field. ?~~ Electromotive force (emf.) ?~~Potential difference (Pd.) I hope it will help you?? Regards. ??

The potential difference between two points is defined as the amount of work done in bringing a unit positive charge from one point to another against the electrostatic forces. V= work done ÷ charge

The emf of a source may be defined as the work done by the source in taking a unit positive charge from its lower potential terminal to the higher potential terminal or it is the energy supplied by the source in taking a unit positive charge once round the complete circuit . EMF= work done÷charge